Table top



Oct. 6, 1931. 0, LANDAw 1,826,618

TABLE TOP Filel'l March 25, 1929 2 Sheets-Sheet 1 IN VEN TOR.

Gak Larzda A TTORNE Y.

OCL 6, 1931. o. LANDAW 1,826,618

TABLE TOP Filed Mardh 25, 1929 2 Sheets-Sheet 2 I INVENTOR. Ocz/fi Y 1 A TTORNE Y.

Patented Oct. 6, 1 931 7 rss PATENT OFFICE OAK IlANDAW OF NArrAn'aE, INDIANA rarernror npplication'filed March 25, 1929; Serial No. 349,799.

The invention relates to table tops, and

I particularly to stamped 1 sheet metal table tops and the like and means for permanently v supporting the same, and is an improvement '5 over the construction and meansof assembling supporting frames for table tops as shown in Patents #1,4:64,910, #l,607,5a2,and $251,629,799 granted to me, and is directed to improvements in the construction of a. frame 7 for stretching and holding the metal table top in plane extended position by removing.

any buckling and distortion caused by the stamping operation orin the heatenamelling thereof, said frame parts being constructed and cooperating in 'a' manner to prevent breaking of the frame itself in its application to the metal top.

A further object is to provide a device of this character in which the frame members 21) are formed to compensate for irregularities inthesurface of the metal top so that no buckling'of the frame members to'cause splitting orbreaking' thereof will result in the application of spreading force to the frame. l I I l A further object isto provide'a device of this-character in which thespreading force of the transverse frame spreadin braces is applied to and through the frame members in the plane ofthe supportingframe to compensate-for and remove distortion from the tabletop, said frame being constructed to prevent buckling of the frame members under the application ofthe spreading force, which buckling'tends to cause splitting of the frame members at the 'jointure thereof. o 'A further object is to provide a tabletop supporting frame of this character in which theframe members are constructed to bridge I theshoulder forming the marginalridge of 'the'tabl'e top wherebyto prevent the inner edges of the frame memb ers frombeing forced sidewise away fromthe-table top.

- A further object is to provide a tabletop supporting frame ofthis character constructed to have a supporting contact with the bottom of the table frame on the opposite sides ofthe shoulder forming the marginal ridge of the table frame.

1 7 With the above and other obje'ctsin view,

the invention resides in the combination and arrangement of parts as hereinafter set forth, shownin the drawings, described and claimed,

it being understood that changes in the precise embodiment of the invention may be made within the scope of what is claimed without departing from the spirit of the invention. V In thedrawings:

1F igure 1 is abottom plan View of the table top I with the supporting frame applied thereto. 7

Figure 2 is a longitudinal sectional view of the metal tabletop showing the manner in which theunsupported sheet metal table top w buckles. V a

Figure 3 is a perspective view of the members comprising: the supporting frame. 7 Figure sis a transverse sectional view of the tabletop in inverted or assembling position showing the frame members in cross section.- i, y ,J l

Figure 5 is a transverse sectional view of the table top in inverted or assembling position showing-a modified form of theframe member in cross section.

. I Figure 6 is a fragmentary perspective View of a corner of thesupporting frame, showing the channel formed therein to receive the inwardly directedshoulder forming the mar- 30 ginal ridge of the metal table top. Y -Figure 7 is a fragmentary perspective view ofa corner of the supporting frame, showing the manner in which frames of the customary construction are broken due to buckling or other forces acting at anangle to the spreadingaforce of the transverse brace members.

eferring to the drawings, the numeral 10 designates a stamped sheet metal table tophavingdepending sides and ends 11 and an inwardly extending flanges 12, said sides and ends 11; and flanges 12 forming a channel :ex-

tendingabout the outer edge of the table top.

Aymarginal off-set portion 13 extends around the margin, of the metal table top and is formed by an inwardly directed ridge 14:

,swaged or stamped in the metal table top. A

frame 15 carries the metal table top, and is comprised of'the side members 16, the end members 17, and the transverse spreading spaced from the outer edges thereof, of a frame mounted in said flanged rim and comprising side bars and end bars, said bars tapering inwardly in transverse, section and having a groove formed in the top contacting face thereof adapted to receive said ridge,

v sides of said ridge.

said bars engaging the top at the opposite 4. The combination with a sheet metal table top h'avinga flanged rim and adownwardly directed ridge formedtherein and spaced fromthe outer'edges thereof, of a frame'm ountedin said flanged rim and comprising side bars and end bars, sa d bars ta pering transversely lnwardly and having a ridge, the portions of said face opposite said grooves having a bearing contact with the top on the opposite'sides of said ridge.

5. The combination with a sheet metal ta- 7 ble top having a flanged rim, of a supporting frame mounted in said flange rim'and comprising side bars and end bars, said bars each having a longitudinal ridge formed in the outer edge thereof and off-set from the cent'er' thereof away from thetop contacting face thereof, said ridge providing substantially line contact between said bars and said flanged rim.

6. The combination with a sheet metal table top having a flanged rim, of a supporting 'framemounted in said flanged rim and comprising side bars and'end bars, said bars having. their outer edges formed to provide a ,longitudinal ridge substantially centrally thereof andzengaging saidrim in a substan tially line contact. v I

7. The combination with a sheet metal table top havinga flanged rim and a downwardly directed ridge formed therein and a spaced from the outer edges thereof, of a supspaced from the outer edges thereof, of av porting frame mounted in said flanged rim 7 I and comprising side bars and end bars, said bars having interconnected longitudinal grooves formed in the top contacting face thereof to receive said ridge and having their outer edges formed to provide a longitudinal "5b ridge substantially centrally thereof engaging said flanged rim in a substantially line contact.

8; The combination with a sheet metal ta- 7 ble'top having a flanged rim and a downwardly directed ridge formed therein and "supporting frame mounted in said flanged u v Q rim and comprlsing side bars and end bars,

. said bars tapering transversely inwardly and having the top contacting face thereof grooved to receive said ridge and to permit bearing contact of said bars with the top on a theopposite sides of said ridge, the outer edges of saidbars being formedto provide a longitudinal ridge substantially centrally having a substantially line engagement with said flanged rim and disposed below the central plane of the frame member whereby the inner side of the upper, top contacting face of each member is forced into engagement with said top upon the application of stress to said member to prevent buckling of the frame away from said top.

10. a The combination with a sheet metal ta-' ble top having a perpendicularly flanged rim and a downwardly directed ridge formed therein spaced from said rim to provide an off-set marginaltop portion, of a top stretching frame mounted in said flanged rim and comprising side and end members subjected to outwardly directed stress, each of said members being grooved to receivesaid ridge and permit engagement thereof with said top at the opposite sides of said ridge, said members each having a longitudinal ridge formed in the outer edge thereof below the central plane thereof and engaging said flanged rim, said ridges forcing the inner sides of each member into bearing contact with the top on the inner side of said ridge upon the application of outward stress thereto whereby 

